baber/WOPTO huggingface dataset:
Patent GB-297986-A (GB)
Title: Improvements in or relating to electrical connectors
IPC: H01R13/15
Filed: 1927-10-13
Abstract: 297,986. Roper, B. H. Oct. 13, 1927. Plug couplings.-The pin is formed of two arms a pivoted together at a' and having a helical &c. spring c that separates the arms causing the semi-cylindrical portions a<2> to be displaced to grip the socket. A wire f is connected by a groove e' and a notch d or aperture e to one or both arms, the joint being covered by an insulating cap b. A binding-screw or ordinary plug coupling may be used for connecting the wire.
Patent GB-944055-A (GB)
Title: Improvements in or relating to the polymerisation of 4-methylpentene-1
IPC: C08F10/14
Filed: 1961-07-27
Abstract: 4-methylpentene-1 is polymerized by contacting 4-methylpentene-1 with a catalyst formed by contacting a halide, other than a fluoride, of a metal of Group IVA, VA or VIA of the Mendel<\>aeef Periodic table with a compound A-(MR1R2R3) where A is an alkali metal, M is zinc, cadmium, tin or lead and R1, R2, R3, being the same or different, are hydrocarbon radicals or hydrogen. The choice of the constituents of the catalyst and the conditions of polymerization being such that at least a part of the metal of Group IVA, VA or VIA is present in the catalyst in a valency state lower than the maximum.  The preferred hydrocarbon radicals are saturated alkyl groups having 1 to 4 carbon atoms per group.  In the example the catalyst used is potassium zinc triethyl and titanium tetrachloride.
Patent GB-394955-A (GB)
Title: Improvements in or relating to tilting seats
IPC: B60N2/18
Filed: 1931-09-30
Abstract: 394,955. Adjustments. MENIER, G., 61, Rue de Monceau, Paris. Sept. 30, 1931, No. 27273. Convention date, Nov. 6, 1930. Addition to 373,479. Void [Published under Sect. 91 of the Acts]. [Class 52 (ii).] In a modification of the vehicle seat described in the parent Specification the fluid for actuating the lifting jacks is supplied either directly from a compressed fluid container or from a pump operated mechanically or electrically. Compressed gas, e.g. air, may be employed to actuate the lifting jacks and the tilting device applied also to seats other than of the vehicle type. The lifting jacks on the rear edge of the chair may be replaced by mechanism lowering the front edge of the chair.
Patent GB-648278-A (GB)
Title: Improvements in and relating to frequency response circuits
IPC: H02J13/00
Filed: 1947-10-10
Abstract: 648,278. Frequency modulation. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 10, 1947, No. 27279. Convention date, Oct. 10, 1946. [Class 40 (v)] A frequency discriminator, Fig. 5, comprises a pair of parallel current paths to which the input wave is applied, each path including a rectifier 60, 61 and a load impedance 57, 59, one path also including a piezo-electric crystal 56 and the other an equivalent capacity 58, the output being taken as the difference between the potentials developed across the load impedances. The discriminator is particularly intended for the reception of carrier-current telegraph or telemetering signals operating with a small frequency shift, the crystal being chosen so that it exhibits series resonance near one operating frequency f and parallel resonance near the other frequency f2, giving the discriminator characteristic shown in Fig. 6. The crystal 56 and capacity 58 are shunted by resistors 64, 65 and the load impedances 57, 59 are byepassed for high frequencies by condensers 62, 63. The discriminator is fed from the receiving line through a sharply-tuned crystal filter followed by tuned amplifiers and limiters. The sharply selective filter and discriminator permits close frequency spacing in a multiple system.
Patent GB-438679-A (GB)
Title: Improvements relating to epidiascopes
IPC: G03B21/08
Filed: 1934-09-22
Abstract: 438,679. Epidiascopes. ALDIS, A. C. W., Sara Hole Road, Sparkhill, Birmingham. Sept. 22, 1934, No. 27290. [Class 97 (i)] In an epidiascope, concave reflectors c, d are provided at front and rear of the lamp a and the area b to be illuminated, and one or more flat reflectors e, each reflecting light over the whole area b, is provided at each side. The reflectors e may be carried by sheet metal holders f secured by angle pieces g.
Patent GB-1390336-A (GB)
Title: Antibiotic b-41
IPC: C12P17/18
Filed: 1973-06-08
Abstract: 1390336 Antibiotic B-41 pesticide SANKYO CO Ltd 8 June 1973 [8 June 1972] 27437/ 73 Heading ASE [Also in Division C2] An. insecticidal and/or acaricidal composition comprises at least one antibiotic from antibiotic B-41 and its constituents A 1 , A 2 , A 3 , A 4 , B 1 , B 2 , B 3 , C 1  and C 2  [see Division C2]. The composition may be in the form of a dust, wettable powder, emulsifiable concentrate or sprayable liquid. The compositions may contain other pesticides such as 2- (1- methylpropyl)-4, 6-dinitrophenyl-#, #-dimethyl acrylate, di-(p-chlorophenyl) - cyclopropylcarbinol, N'-(2-methyl-4-chlorophenyl)-N, N-dimethylformamidine, 2, 4, 4', 5-tetrachlorodiphenylsulphone, 1, 1-bis (p-chlorophenyl)-2, 2, 2-trichloroethanol, 0, 0-diethyl-S-(2-ethylthio) ethyl phosphorodithioate, 0, 0-dimethyl-S (N- methyl-N-formylcarbamoylmethyl) phosphorodithioate, 2-see.-butylphenyl-N-methylcarbamate, m-tolyl-N-methylcarbamate or mineral oil. In some cases, synergistic effect is exhibited. Antibiotic B-41 constituents A 3 , A 4 , B 2 , B 3 , C 1  and C 2  have the formula: wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are as follows: Constiutuent A 1  has the formula: Constituents B, and A 2  have the formulae C 39 H 58 O 10  and C 38 H 56 O 10  respectively.
Patent GB-1503967-A (GB)
Title: Coulometric measuring apparatus
IPC: G01N27/42
Filed: 1975-06-30
Abstract: 1503967 Titration apparatus RADELKIS ELEKTROKEMIAI MUSZERGYARTO SZOVETKEZET 30 June 1975 [2 July 1974] 27477/75 Heading G1N In titration apparatus with electrolytic reagent generation and electro-chemical end point detection, a reference electrode, hydrogen ion activity measuring electrode and generating anode and cathode are all located in the measuring cell, the reference electrode comprises silver, lead, mercury or thallium and is diaphragm-less and the cell electolyte comprises, in excess, a chloride and/or bromide and/or iodide of one or more of sodium, potassium, rubidium, cesium, calcium strontium or borcium. The added salt acts as a depolarizer for anions released at the generating anode and as reference electrolyte for the reference electrode and must (a) form an insoluble precipitate with the liberated anions and (b) be soluble in the electrolyte. The reference electrode preferably surrounds the measuring electrode and may be ion-selective. Preferably the generator anode is of the same material as the reference electrode. The system may be used to determine reagent concentrations. If a weak acid or acidic salt of dissociation constant less that 10<SP>-1</SP> is added to the electrolyte and alkali is electrolytically generated, buffer solutions of accurately known pH can be generated for pH electrode standardization. For titration determinations the PD between reference and measuring electrodes 6 is fed to differential amplifier 7, the other input of which is a pre-set voltage from 8. The amplifier output feeds a display unit and a comparator and switching circuit 4 controlling current generator 5 which supplies the generating electrodes. A timing circuit 3 supplies an integrating circuit (10 and 11) the output of which is displayed at 12. The generator anode is removably mounted in a spring clip and the generator cathode, which is preferably a platinum or silver wire has only a small area which is not covered by an insulating sheath.
Patent GB-958668-A (GB)
Title: Process for the polymerisation of 1:3:6-trioxa-cycloalkanes
IPC: C08G4/00
Filed: 1960-08-08
Abstract: 1:3:6-trioxacycloalkanes are polymerized in the presence of a catalyst system comprising at least one organo-aluminium compound and at least one organic halogen compound in which the mobility of the halogen atoms is lower than the mobility of the chlorine atom in alpha-monochloro-dialkylether and in the presence or absence of an inert organic solvent. 1:3:6-trioxacyclo-octane is specified. Specified aluminium compounds are dimethyl- or diethyl-aluminium chloride, trimethyl-triethyl- or tri-isobutyl-aluminium and diisobutyl-aluminium hydride while the organic halogen compound may be 4-chloro-methyl -13- dioxolone-(2), HOCH2C (CH2OCF2-CFClH)3, C2H5-O-CF2-CFH-CF3, or <FORM:0958668/C3/1> Specified solvents are aliphatic, cycloaliphatic, or aromatic hydrocarbons or chlorination products of such hydrocarbons.
Patent GB-298191-A (GB)
Title: Improvements in inflation and deflation pressure indicators for pneumatic tyres
IPC: B60C23/04
Filed: 1928-09-25
Abstract: 298,191. Roncin, D. Oct. 5, 1927, [Convention date]. Pneumatic-tyre pressure gauges.-Comprises a device in which a spring-pressed plunger engages the inner tube and controls the movement of a member which retains a signal operating member when the pressure in the tube is normal, and releases the operating member when the pressure is above or below normal. The cylinder 1 secured to the wheel rim 2 encloses a plunger 4 pressed against the pneumatic tyre by a spring 5. The rod 6 passes down through the bottom of the cylinder and ends in a head 7. Towards the end of the rod it is formed with two flat parts 8, 9 of reduced thickness. A box 16 of square section houses a tongue 10 which is flat and provided with a slot 12 ending in a hole 13. The tongue is provided with a square head 11 acted upon by a spring 17. The box has two projecting plates 14, 15 provided with aligned holes to form a guide for the rod 6 when the box is assembled with the plates 14, 15 inserted transversely into the cylinder 1. The tongue device is arranged at such a height that normally the part 20 lies in the hole 13 in the tongue and the holes in the plates 14, 15. On the pressure rising or falling a certain degree above or below normal the rod 6 falls or rises and one of the reduced parts 8, 9 lies in the hole 13, whereupon the spring 17 causes the tongue 10 to project from the cylinder 1. It may engage an electrical contact &c. to actuate an alarm or light a signal lamp.
Patent GB-1535384-A (GB)
Title: Sublimation transfer processes
IPC: B41F16/02
Filed: 1976-07-01
Abstract: 1535384 Transfer printing STORK BRABANT BV 1 July 1976 [2 July 1975] 27513/76 Heading B6C [Also in Divisions D1 and H1] A web is printed by transfer from a support, e.g. carrying a sublimable dyestuff, under subatmospheric pressure and heat in an apparatus wherein the support and/or the web is subjected to electrostatic charge by means of a device producing a beam of electrons or ions, the charged assembly being kept electrically isolated until transfer is complete. As shown, transfer web 2 and web 3 are brought into contact and introduced into housing 1 maintained at subatmospheric pressure, subjected to the electrostatic discharge by members 9-11, and heated by radiant heaters 14. After exit from the housing the webs 2 and 3 are separated.
Patent GB-525396-A (GB)
Title: Improvements in or relating to electrically-operated calculator equipment
IPC: G06F7/46
Filed: 1938-11-21
Abstract: 525,396. Calculating-apparatus. STANDARD TELEPHONES & CABLES. Ltd. (Kozma, L., and Kruithof, J.). Nov. 21, 1938, No. 27538/39. Divided out of 525,330. Drawings to Specification. [Class 106 (i)] In apparatus comprising an electricallyoperated calculating unit for the four rules and an operator's control unit means are provided for sending from the control unit to the calculator a problem completely in the form of a first number in regular sequence of digits from highest to lowest denomination, an operation sign, and a second number in regular sequence, and an indication that said problem is complete and means in said calculator for calculating the solution to said problem. The denominational values of the digits sent are determined by the operation of a decimal point control key in the control unit. The description in the Specification is identical to that in Specification 525,330 but the claims differ. Specifications 525,329, 525,397 and 525,398 also are referred to.
Patent GB-158392-A (GB)
Title: Improvements in or relating to frequency meters
IPC: G01R23/02
Filed: 1919-11-10
Abstract: 158,392. Nalder Bros. & Thompson, Ltd., and Lipman, C. L. Nov. 10, 1919. Frequency, measuring.-A frequency meter having inductive and non-inductive operating circuits, is provided with reinforcing or compensating coils for modifying parts of the scale. It may be constructed so that a central cr other point of the scale may be used to indicate any one of a number of frequencies. The meter has opposing coils D, E in circuits containing respectively inductance F and resietance G. Adjustable inductance or resistance may be provided for varying the factor of the instrument. As shown, a switch arm H simultaneously cuts out resistance from the non-inductive circuit and switches additional inductance into the inductive circuit, or vice versa- Parts of the coils D, E may simultaneously be switched in and out. The switch arm may carry a disc on which are numbers visible through a hole opposite the centre cf the scale of the instrument. The coils D, E act on needles B, C consisting of eccentrically-mounted oval plates. Smaller coils D<1>. E<1> in series with the main coils act on additional needles B<1>, C<1> arranged so as to enter the field of the coils when the action of the main coils becomes less effective. The impedance of any of the circuits may be varied by introducing capacity. Instead of a spindle and needles, there may be employed cores made of alternate sections of magnetic and non-magnetic material, the cores and sclenoids being arranged at opposite ends of a pivoted arm.
Patent GB-601187-A (GB)
Title: Knife sharpener
IPC: B24D15/08
Filed: 1945-10-22
Abstract: 601,187. Grinding knives. CHESTER, F. R. Oct. 22, 1945, No. 27803. [Class 60] A knife-sharpener comprises a casing 11 having a slot 11c through which the knife is inserted to lie between adjacent convolutions of a helix 14, so that as the knife is reciprocated lengthwise in the slot, the helix and its supporting-member 13 are rotated and moved axially against the action of a returning-spring 17. The member 13 is mounted on a mandrel 12 one end 12a of which is secured to the wall 11b of the casing 11, the helix 14 being retained between a flange 13a and a disc 15 fitting on a square boss 13b which is riveted over to hold the disc. The spring 17 is anchored at one end 17a to the member 13 and the other end is anchored to the cylindrical centre part of an adjustment member 18, by passing the inturned end of the spring through a hole 18b. The member 18 has radial arms 18c, extending from its centre, by which the member may be turned until the junction between the two end coils of the helix 14 is centrally disposed with the slot 11c. The member 18 is then held in this position by bending the appropriate arm 18c to lie in a hole 11d in the wall 11b. File teeth or corrugations may be provided on the operative surfaces of the helix 14. The file teeth may be arranged as small threads arranged around the wire of the helix, or on the knife sharpening side thereof only.
Patent GB-628794-A (GB)
Title: Improvements in or relating to bending machines for tubes, rods, bars and the like
IPC: B21D7/022
Filed: 1947-10-17
Abstract: 628,794. Angular-bending. TUBELA ENGINEERING CO., Ltd., and BOURNE, F. W. Oct. 17, 1947, No. 27844. [Class 83 (iv)] Formers.-In a sweep-arm bender the former is secured on a post by a pin which forms a pivot for the bending arm. The former C<SP>1</SP> is mounted by boss C on a post B welded to a fixing plate A and secured by a pin D on which are pivoted lugs E<SP>1</SP> of the bending lever. A handle G<SP>2</SP> carrying an eccentric pressure roller G and stop screw J is pivoted to the lugs E<SP>1</SP> of a lever E<SP>2</SP> by a pin F engaging holes E<SP>3</SP>. The tube &c. to be bent is held by a stirrup L<SP>1</SP>. Initial movement of the -handle G<SP>2</SP> tightens a pressure pad K on to the tube and the lever E<SP>2</SP> is swung to effect bending. The former is changed by withdrawing the pin D and the pressure roller G is removed by withdrawing the pin F.
Patent GB-1471282-A (GB)
Title: Field effect semiconductor devices
IPC: H01L27/088
Filed: 1974-06-25
Abstract: 1471282 IGFET's INTERNATIONAL BUSINESS MACHINES CORP 25 June 1974 [28 July 1973] 28022/74 Heading H1K In an IGFET, which includes a source and a drain defining a channel therebetween, the length L of the channel, Fig. 4A, being the distance between the source and drain, and a gate electrode which overlies the channel and a region of the semi-conductor substrate alongside the channel, the width W of the channel, Fig. 4B, is made sufficiently small such that, in operation, it has a direct influence on the value of the threshold voltage of the transistor-a reduction in the channel width W producing an increase in the threshold voltage VT, as shown in Fig. 3B, in which d 2 /d 1  is the ratio of, respectively, the depletion layer depth in the region alongside the channel to that in the channel. Utilizing this effect with the known effect that a reduction in the channel length decreases the threshold voltage, then a device of much smaller channel area can be produced while maintaining a desired threshold voltage level. In addition field effect transistors can be formed having different threshold voltage values in the same semi-conductor substrate without needing any additional processing steps merely by choosing different channel widths for the devices. Although in the present arrangement the channel width W is fixed by the choice of threshold voltage and other design criteria determine the optimum channel length L, the impedance value of the FET which depends on the channel width to channel length ratio W/L can be varied by the arrangement shown in Figs. 4A and 4B. In this arrangement a number of FET's of narrow channel width W have common source and drain zones 24, 34, with the gate zones of length L and width W formed by thin zones 54 of insulating layer 44. A common gate electrode 64 is provided and the resulting overall transistor has a threshold voltage which is determined by the channel width W of an individual part-transistor and an impedance value which is determined by the effective resulting channel width W R  which is equal to the sum of the individual channel widths W. The width of the channel may be defined by doped zones in the substrate on either side of the channel.
Patent GB-393459-A (GB)
Title: Improvements in agitators for washing machines
IPC: D06F13/00
Filed: 1932-10-08
Abstract: 393,459. Washing-dollies. BEATTY, W. G., Fergus, Wellington, Ontario, Canada. Oct. 8, 1932, No. 28055. [Class 138 (ii).] An agitator for a washing-machine of the type described in Specifications 337,640 and 337,641, [both in Class 138 (ii), Washing, mangling, &c.], comprises a circular disc 12 having an elongated tubular hub 13. extending vertically from one side and a number of fins 14 coaxial with the hub and spaced therefrom and projecting from the same side of the disc as the hub. The hub fits over a sleeve secured in the bottom of the wash-tub through which passes an oscillating shaft which may be vertically adjustable and the top of the hub is provided with a square aperture 17 which fits over the correspondingly shaped top of the shaft. The outer edges of the fins curve or join directly into the edge of the disc and the fins are provided with a thickened bead 20.
Patent GB-905753-A (GB)
Title: An improved holder for supporting cast animals including ewes while mothering their lambs
IPC: A01K1/06
Filed: 1960-08-15
Abstract: 905,753. Animal supports. NIKOLAISON, O. R. Aug. 15, 1960, No. 28120/60. Class 81 (2). A support for a ewe during suckling comprises a collapsible frame 1 carrying a sling 5 on which the animal is supported in an upright position. The frame is preferably made from crossed, pivoted end members 2 joined by horizontal, longitudinal members 9 so that the height of the sling can be adjusted by a chain 7 attached to one lower horizontal member 4 and having any desired link located in a slotted lug 8 on the adjacent member. The sling, which is preferably made of canvas reinforced by leather 10, has leg holes 11 and a hole 12 through which the animal's udder passes.
Patent GB-603603-A (GB)
Title: Improvements in or relating to brackets for adjustable shelves
IPC: A47B57/48
Filed: 1945-10-25
Abstract: 603,603. Brackets. KODAK, Ltd., and APPLETON, G. Oct. 25, 1945, No. 28203. [Class 52(v)] A bracket for an adjustable shelf comprises a longitudinal L-section member 6 extending along the side wall of a cupboard or container and having angle members 8, 10, each carrying one or more studs 9, 13 respectively for engagement in holes 2 of vertical or horizontal supporting members 1, one or both of the angle members being pivoted to the longitudinal member 6. In the drawing, the angle member 8 and studs 9 are fixed in relation to the member 6, while the angle member 10 is pivotally mounted on a rivet 11 at the other end of the member 6, and the two studs 13 are urged into engagement with the holes 2 by a spring 17 and may be disengaged to facilitate adjustment of the shelf by upward finger pressure on a lug 14.
Patent GB-1256349-A (GB)
Title: Solid lubricant
IPC: C10M169/00
Filed: 1970-06-10
Abstract: 1,256,349. Lubricants. OILES KOGYO K.K. 10 June, 1970 [11 June, 1969], No. 28215/70. Heading C5F. Solid lubricants comprise (a) graphite Œ tungsten disulphide and (b) sodium fluoride. The mixture may contain sodium metaphosphate as a binder.
Patent GB-203929-A (GB)
Title: Improvements in combination padlocks
IPC: E05B37/02
Filed: 1922-10-18
Abstract: 203,929. Tobler, E. Oct. 18, 1922. Padlocks; locks, permutation. -In a padlock in which both limbs of a sliding shackle are locked by the engagement of rotatable permutation-discs in notches in the limbs, the notches in one limb are staggered in relation to those of the other limb, and the discs are directly superposed so that by reversing the shackle limb for limb and turning over each disc, the combination can be changed. The combination can also be changed by rearranging the discs in relation to each other or by exchanging some of them for others. The shackle 1 has notches 4 on one limb staggered with relation to similar notches 4 on the other limb, and fits into recesses in a casing 3 so that the shackle limbs partly project into a central space in the casing to engage discs 5 positioned therein. The discs 5 have each a notch 8 for registering with one of the limbs of the shackle for release, and a notch 9 working in conjunction with the other limb to form a stop. A pin 7 on each disc projects into a slot in the casing for setting the disc. In the position shown in the Figs., the padlock is locked, alternate discs engaging opposite limbs of the shackle. To release, some of the pins 7 are placed to one side of the slot in the casing and some to the other, causing the notches 8 to register with the corresponding notches in the limbs so that the shackle can be pulled out.